Locking and unlocking device for vehicle doors, in particular swinging sliding doors for rail vehicles

Abstract

An engagement element is provided on the inside of the door leaf or of the door at a defined distance from the inside of the door. A spring-loaded locking hasp lies horizontally opposite the engagement element on the inside of the door frame. The locking hasp has a semicircular or claw-shaped recess and a laterally projecting locking section. A locking element is movably guided inside the door frame and connected to a vertically movable rod. During the closing movement of the door, the engagement element engages with the recess of the locking hasp, which swings with its locking section in the direction of the center of the door opening and assumes a position parallel to the door and is locked in this position by a movement of the locking element which is triggered in the vertical direction.

1. A locking and unlocking device for a swinging sliding door on a vehicle, wherein the swinging sliding door in a closed state thereof is provided in a sidewall plane of the vehicle in a door frame, the device comprising;
 at least one engagement element disposed on an inside of the door, at a defined spacing distance from the inside of the door and substantially laterally inside the door, said engagement element being engageable from behind, and pointing in a lateral direction of the door; 
 a locking unit disposed in a mount at the inside of the door frame in a region of a vertical longitudinal side of a closing edge of the door, the locking unit including:
 a horizonatally pivotable spring-loaded locking hasp disposed opposite said engagement element inside the door frame, said locking hasp having a semicircular or claw-shaped recess formed therein and a locking section protruding laterally over said recess; 
 during a closing movement of the door, via a pressing movement in the lateral direction, said locking section engaging said engagement element from behind, said engagement element engaging said recess of said locking hasp, and said locking hasp assuming a position extending parallel to the door; and 
 a locking element movably guided on an inside of the door frame and connected to at least one rod movably disposed in a vertical direction, and in a closed state of the door, said locking element engaging said locking section for locking said locking hasp. 
 
 
   
   
     2. The locking and unlocking device according to  claim 1 , wherein said locking hasp is mounted on a vertical drive shaft. 
   
   
     3. The locking and unlocking device according to  claim 2 , which comprises a traction spring connected to said mount and attached to said looking hasp. 
   
   
     4. The looking and unlocking device according to  claim 1 , wherein said locking element is a bracket having a bent section, limbs, and an opening, said locking element is rotatably mounted at said bent section on a horizontally arranged shaft in a mount attached to the inside of the door frame, wherein said opening of said bracket points in a direction of said door, and one of said limbs of said bracket has an angled portion directed toward said opening of said bracket and having a roller rotatably mounted on a horizontal shaft, and wherein at least an upper limb of said limbs is connected to a vertically movable rod, and a traction spring connected to said mount is attached to said bracket. 
   
   
     5. The locking and unlocking device according to  claim 4  configured as a multiple locking device, wherein individual said brackets are movably connected to one another by way of vertically aligned rods coupled to said limbs. 
   
   
     6. The locking and unlocking device according to  claim 1 , which comprises a stop disposed to limit a movement of said locking hasp in one rotary direction. 
   
   
     7. The locking and unlocking device according to  claim 1 , wherein said engagement element is a roller disposed in a vertical guide of a mount. 
   
   
     8. The locking and unlocking device according to  claim 1 , which further comprises a drive motor with a housing, and a segment plate for activating said at least one vertically movable rod, said segment plate being attached to said housing and, owing to a reaction force of the drive, performing a rotational movement limited by two stops, and further comprising a traction rod coupled to the segment plate for transmitting the rotational movement to a spring-loaded pivoted lever, said pivoted lever being rigidly connected to a shaft having attached thereto a lever, said lever being in contact with at least one horizontal coupling rod, said coupling rod being articulated at a hinged plate arranged in an upper region of door frame and connected to said rod. 
   
   
     9. The locking and unlocking device according to  claim 8 , configured for a two-wing door, and comprising two coupling rods articulated to said lever and each connected to said rod by way of a respective hinged plate. 
   
   
     10. The locking and unlocking device according to  claim 8 , wherein said stops, said traction rod and said pivoted lever are mounted on a plate or a carrier element. 
   
   
     11. The locking and unlocking device according to  claim 1 , wherein, for enabling manual emergency unlocking, at least one traction device engages on a first spring-loaded pivoted lever connected via a second lever to a third lever, wherein said third lever is attached to an axial shaft of a spring-loaded rotary magnet and is formed with elongate holes in which a bolt is displaceably mounted, wherein said bolt engages, when said traction means is subjected to tensile stress, with a fourth lever pivotably mounted on a shaft, and said bolt moves said lever, wherein a fourth lever is operatively connected via at least one horizontal coupling rod and deflection unit to a locking rod that is movable in the vertical direction, and wherein a rod, for enabling an application of a force component bringing about locking and unlocking of the door to be temporarily applied, engages on said fourth lever. 
   
   
     12. The locking and unlocking device according to  claim 11 , wherein said first lever and said third lever define functional element for emergency unlocking and said fourth lever is a functional element responsible for locking/unlocking, and wherein said first lever, said third lever, and said fourth lever are pivoted levers mounted on a horizontal plate or a carrier element. 
   
   
     13. The locking and unlocking device according to  claim 12 , wherein, in order to decouple emergency unlocking means, said third lever is rigidly attached to a vertically downwardly directed shaft defining an axis of rotation, and said shaft is connected to a spring-loaded rotary magnet, wherein, when said rotary magnet is energized, said third lever is movable in a counter-clockwise direction and, as a result, said bolt disengages from a claw-shaped recess of said fourth lever. 
   
   
     14. The locking and unlocking device according to  claim 1 , configured for single-wing or two-wing swinging sliding doors of a rail vehicle.